devel/nspr, security/nss, security/ca_root_nss, www/firefox: update to 4.10.8, 3.17.4, 35.0.1

[jbeich]

Summary

• Update NSPR to 4.10.8
• Update NSS to 3.17.2
• Update Firefox to 35.0.1

Changes: http://mozilla.6506.n7.nabble.com/ANNOUNCE-NSPR-4-10-8-Release-td332365.html
Changes: https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.17.4_release_notes
Changes: https://www.mozilla.org/en-US/firefox/35.0.1/releasenotes/
Approved by: bapt or flo (mentors)

Test Plan

Green on 8.4R and 10.0R amd64, 9.3R and 10.1R i386, also as used by www/firefox-esr.

[jbeich]

I've completely missed firefox 35.0.1. Green on 9.3R i386 and 10.0R amd64.

[jbeich]

Closed by commit rP378253 (authored by @jbeich).